I don't think the negative reviewer fully understands how Twitter works. In the thread you link to he says that he didn't delete the tweet, and that they "disappear after a certain number of days". They don't. Here's the tweet you're referring to (28 Jul):
http://twitter.com/#!/FoodBlogTeaShow/status/966666235864719...
and here's another from 14 hours ago:
http://twitter.com/#!/FoodBlogTeaShow/status/981033271197696...
I can't tell if that second one is supposed to be sarcastic or not.